Non-Controlling Interests - Schedule of Effects of Changes in Ownership in Carvana Group on Equity (Details) - USD ($) $ in Millions |
9 Months Ended | |
|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
|
| Noncontrolling Interest [Abstract] | ||
| Decrease as a result of issuances of Class A and B common stock | $ 0 | $ (187) |
| Increase as a result of exchanges of LLC Units and adjustments to non-controlling interests related to RSU vesting and NQSO exercises | 9 | 20 |
| Total transfers from (to) non-controlling interests | $ 9 | $ (167) |